Ask HN: are there any democratic social networks?

Social networks like HN are basically [usually benevolent] dictatorships. The users don't get to decide the direction or rules of the site.

Then the question - are there democratic sites that let [force?] users [to] vote on the rules and such.

Does anyone know of such a site that is democratic all the way down?

Reddit seems to be there partially in that anyone can apparently start a subreddit and determine rules within an established framework. However somewhere like HN is apparently the opposite of representational democracy in that you can vote on specific content but not on the overall site structure.

To recap, I'm interested in social websites where one can vote to change the moderation system or vote to alter the algorithms used in producing the top stories or what-have-you.